The Effect Of A Salisilaldimine Schiff Base On The Acidic Corrosion Of Mild Steel
Abstract
The effect of a salicylaldimine Schiff base (1,4-Bis[2-(2-hydroxybenzyliden amino) phenoxy]butane) on the corrosion behaviour of mild steel in 0.1M HCl media were investigated by using potentiodynamic polarisation, linear polarisation, electrochemical impedance spectroscopy, electrochemical quartz crystal microbalance and SEM methods. Potentiodynamic polarisation measurements indicate that studied Schiff base was acting as cathodic type inhibitor. All electrochemical measurements show that inhibition efficiencies increase with increase in inhibitor concentration. This reveals that inhibitive action of inhibitor was mainly due to adsorption on mild steel surfaces. It was found that adsorption of these inhibitors follows Temkin adsorption isotherm. The results of SEM and EQCM measurements indicate that Schiff base is adsorbed on metal surface and metal is protected against corrosion.
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References
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